Dyeing equipment and method

Abstract

The invention relates to dyeing equipment and method. The dyeing equipment comprises a cloth sending device, a pad dyeing device, a drying box, a cooling device and a finished-product collection device, wherein the drying box comprises a drying region, a heat dissolving and color fixing region and a critical heat melting and color fixing region in sequence along a cloth conveying direction; the drying region is used for drying cloth at a pre-set drying temperature; the heat dissolving and color fixing region is used for heating the cloth to a heat dissolving temperature at a pre-set heat dissolving and color fixing temperature; the critical heat melting and color fixing region is used for heating the cloth to a critical heat melting temperature at a pre-set critical heat melting and color fixing temperature. After a critical heat melting curing process is finished, dye molecules and fiber molecules are tightly combined together through rapid cooling, and dye micro-particles are fixedly arranged on a fiber surface layer of the cloth; the cloth is repeatedly bent and wound through a plurality of guide wheels so that the cloth has a soft hand feeling and a finished product is obtained to finish a dyeing process; compared with traditional dyeing equipment, the dyeing equipment has the advantages of relatively low energy consumption and less sewage discharging amount.

Description

technical field [0001] The invention relates to the technical field of textile dyeing and finishing, in particular to a dyeing device and a method thereof. Background technique [0002] At present, the dyeing and finishing industry is still a three-high industry with high energy consumption, high water consumption and high pollution, that is, the dyeing and finishing industry is the most polluting link in the entire textile industry chain. Generally, before the dyeing operation of textiles, the gray cloth needs to be desized through a desizing machine to remove the size on the surface of the yarn, so that the dye can better adhere to the surface of the gray cloth. After desizing, the fabric is dried in a dryer and then transferred to a high-temperature dyeing vat for dyeing. After dyeing, it is washed with water and finally dried by a setting machine. [0003] Among them, in the traditional dyeing process, it is necessary to add water and heat treatment to the dye in the dy...

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Problems solved by technology

[0003] Among them, in the traditional dyeing process, it is necessary to add water and heat treatment to the dye in the dyeing vat in advance, and to apply high pressure during the dyeing process to make the dye penetrate into the capillary pores of the fabric fiber to achieve the dyeing effect. It can be seen from this that the traditional dyeing process still has the problems of large energy consumption and large waste water discharge.

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